Engadget --- We love the concept behind this device — to screen your cellphone calls for importance while you’re busy chatting up someone else — we just have no idea why it involves a squirrel. MIT’s Stefan Marti has developed the Bluetooth, animatronic, context-aware Cellular Squirrel as part of his dissertation project — when it picks up an incoming call, it actually engages the remote caller in a conversation and compares keywords from the interaction to keywords picked up from the conversation you’re having nearby. It combines this data with your contact list and the caller’s tone of voice to determine whether the call is important enough to interrupt you. Yeah, we laugh at it, but we secretly want one, because to get your attention it gyrates its body in that animatronic way that makes us feel kinda funny.

Firefly has just five keys: mom and dad speed keys, the phone book list, send call and end call. There’s a 911 button on the side for emergency calls (with accidental call prevention), caller ID, interchangeable translucent shells, a backpack clip attachment, 12 ring tones, seven screen colors and five animations. It's even bilingual (you choose English or Spanish).

The SawStop system works by recognizing the difference in the electrical properties of wood and a user. When the SawStop system detects contact between the blade and a user it immediately forces a brake into the teeth of the blade. The brake absorbs the energy of the blade, bringing the blade to a complete stop in approximately 5 milliseconds